Here are requirements from user and product interaction perspectives:
- We should not require people to download docs from somewhere else. Links to docs should be available within the product. PDF is fine but context sensitive contents are better.
- Use videos to demonstrate How-Tos. Again, links should be available within the product
- Show Release Note directly with the product
- Allow the users to directly enter a support case within the product
- Allow the users to provide suggestions directly from the product
- A small News&Update - directly communicate to your users
This is the modern software should be and I just saw one!!